О ВОЗМОЖНОСТИ ПОЛУЧЕНИЯ ТВЕРДЫХ ПЕН НА ОСНОВЕ МОДИФИЦИРОВАННОГО КАМЕННОУГОЛЬНОГО ПЕКА
Електронний архів E-archive DonNTU – (Electronic archive Donetsk National Technical University)
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
О ВОЗМОЖНОСТИ ПОЛУЧЕНИЯ ТВЕРДЫХ ПЕН НА ОСНОВЕ МОДИФИЦИРОВАННОГО КАМЕННОУГОЛЬНОГО ПЕКА
THE POSSIBILITY OF SOLID FOAMS OBTAINING ON A BASE OF MODIFIED COAL TAR PITCH |
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| Creator |
Крутько, Ирина Григорьевна
Колбаса, Виктория Александровна |
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| Subject |
газообразователи
твердые пены каменноугольный пек модификация газонаполненные пластмассы blowing agents solid foams coal tar pitch modification gas-filled plastics |
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| Description |
Gas-filled materials with polymeric matrix – foamed plastics - have а solidified foam structure. The foamed plastics are produced by foaming and subsequent hardening of initial liquid or viscous-plastic composition. Coal tar pitch is a hard brittle material with low mechanical strength. Coal tar pitch modification by means of active additives gives great opportunities to correct and change the properties of coal tar pitch. Modified coal tar pitch has a number of properties that allow to predict its use as the polymer matrix in the gas-filled plastics of cellular structure. Modified coal tar pitch in the temperature range of 125-155C has a viscosity of 55 - 190 Pa•sec. Therefore, for the foaming of modified coal tar pitch is advisable to use chemical foaming agents. Preliminary studies have shown that the modified coal tar pitch as a thermoplastic material that has properties of polymer, can be used for solid hydrocarbon foams production. Testing of ammonium bicarbonate and sodium mixtures, and stearic acid with chalk as chemical blowing agents to pitch showed that their decomposition with the release of gases observed in the temperature range 100 - 190C. At these temperatures the coal tar pitch has rubbery and plastic condition, i.e. has a viscosity that provides foaming. Keywords: coal tar pitch, modification, gas-filled plastics В статье рассматриваются свойства каменноугольного пека как полимерного материала. Представлен механизм образования твердых пен и показана возможность получения пеноматериала на основе модифицированного каменноугольного пека. |
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| Date |
2013-04-13T14:13:14Z
2013-04-13T14:13:14Z 2013 |
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| Type |
Article
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| Identifier |
2074-6652
УДК 661.8; 678.5 http://ea.donntu.edu.ua/handle/123456789/18476 |
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| Relation |
Наукові праці ДонНТУ.;Серія: Хімія і хімічна технологія, 2013. - Вип.2(21). - С.156-161
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| Publisher |
Донецк, ДонНТУ
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